Bright fluro yellow urine is from Vit B. I've never hard it it happening from excess sodium, but it's possible (though unlikely). I set myself a personal challenge every day to get it to turn clear again after taking my Vit B's It's one way to fuel my competitive spirit AND make sure I get lots of water.

I have noticed that my sweat smells more, but it never used to have any scent at all, so I probably smell "normal" now and my breath only I can notice and it's more a bad taste in my mouth than anything else.